XML 98 R122.htm IDEA: XBRL DOCUMENT v2.4.0.6
Unaudited Quarterly Results (Detail)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2011
USD ($)
Dec. 31, 2011
GBP (£)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2010
USD ($)
Dec. 31, 2011
After Tax [Member]
USD ($)
Dec. 31, 2011
Long-term Care
Before Tax [Member]
USD ($)
Dec. 31, 2011
Long-term Care
After Tax [Member]
USD ($)
Dec. 31, 2011
Individual Disability Closed Block
Before Tax [Member]
USD ($)
Dec. 31, 2011
Individual Disability Closed Block
After Tax [Member]
USD ($)
Dec. 31, 2011
Adjustments for New Accounting Pronouncement [Member]
USD ($)
Dec. 31, 2010
Adjustments for New Accounting Pronouncement [Member]
USD ($)
Dec. 31, 2011
Adjustments for New Accounting Pronouncement [Member]
Before Tax [Member]
USD ($)
Dec. 31, 2011
Adjustments for New Accounting Pronouncement [Member]
Before Tax [Member]
USD ($)
Dec. 31, 2010
Adjustments for New Accounting Pronouncement [Member]
Before Tax [Member]
USD ($)
Impairment of Deferred Acquisition Costs     $ 0 $ 196.0 $ 0 $ 127.5         $ 196.0 $ 0 $ 196.0 $ 196.0 $ 0
Reserve Increase Due to Unlocking             573.6 372.8 183.5 119.3          
Income Tax Examination, Increase (Decrease) in Liability from Prior Year (41.3)   (11.0) (41.3)                      
Income Tax Reconciliation, Repatriation of Foreign Earnings 18.6                            
Proceeds from Dividends Received   £ 150.0